﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;
using System.Windows;
using System.Globalization;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace ProductKeyManager.UI
{
    /// <summary>
    /// Decimal to Percent Value Converter
    /// </summary>
    public class DecimalToPercentConverter : IValueConverter
    {
        #region IValueConverter Members

        /// <summary>
        /// Converts a decimal to a percentage where 1 is 100%.
        /// </summary>
        /// <param name="value">The value produced by the binding source.</param>
        /// <param name="targetType">The type of the binding target property.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            decimal input = (decimal)value;
            input = decimal.Round(input, 2);
            return decimal.Round((input * 100), 0).ToString(CultureInfo.CurrentCulture) + "%";
        }

        /// <summary>
        /// Not used, required for IValueConverter interface
        /// </summary>
        /// <param name="value">The value that is produced by the binding target.</param>
        /// <param name="targetType">The type to convert to.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }

        #endregion
    }

}
